add open3d build example

Author: yxlao

.clang-format

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+BasedOnStyle: Google
+IndentWidth: 4
+ColumnLimit: 80
+UseTab: Never
+Standard: c++14
+ContinuationIndentWidth: 8
+AccessModifierOffset: -4
+BinPackParameters: false
+SortIncludes: true

.gitignore

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+build/
+
 # Prerequisites
 *.d
 

CMakeLists.txt

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+# On Ubuntu 18.04, get the latest CMake from https://apt.kitware.com/.
+cmake_minimum_required(VERSION 3.18)
+set(CMAKE_CXX_STANDARD 14)
+project(Open3DCMakeFindPackage LANGUAGES C CXX)
+
+if(POLICY CMP0091)
+ # https://stackoverflow.com/a/56490614
+ cmake_policy(SET CMP0091 NEW)
+endif()
+
+# The options need to be the same as Open3D's default
+# If Open3D is configured and built with custom options, you'll also need to
+# specify the same custom options.
+option(STATIC_WINDOWS_RUNTIME "Use static (MT/MTd) Windows runtime" ON)
+# This needs cmake_policy(SET CMP0091 NEW)
+if (STATIC_WINDOWS_RUNTIME)
+ set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+else()
+ set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+# Find installed Open3D, which exports Open3D::Open3D
+if(WIN32)
+ find_package(Open3D HINTS ${CMAKE_INSTALL_PREFIX}/CMake)
+else()
+ find_package(Open3D HINTS ${CMAKE_INSTALL_PREFIX}/lib/cmake)
+endif()
+if(NOT Open3D_FOUND)
+ message(FATAL_ERROR "Open3D not found, please use -DCMAKE_INSTALL_PREFIX=open3d_install_dir")
+endif()
+
+add_executable(Draw Draw.cpp)
+target_link_libraries(Draw Open3D::Open3D)
+
+# On Windows, when BUILD_SHARED_LIBS, copy .dll to the executable directory
+if(WIN32)
+ get_target_property(open3d_type Open3D::Open3D TYPE)
+ if(open3d_type STREQUAL "SHARED_LIBRARY")
+ message(STATUS "Will copy Open3D.dll to ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>")
+ add_custom_command(TARGET Draw POST_BUILD
+ COMMAND ${CMAKE_COMMAND} -E copy
+ ${CMAKE_INSTALL_PREFIX}/bin/Open3D.dll
+ ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>)
+ endif()
+endif()

Draw.cpp

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+// ----------------------------------------------------------------------------
+// - Open3D: www.open3d.org -
+// ----------------------------------------------------------------------------
+// The MIT License (MIT)
+//
+// Copyright (c) 2021 www.open3d.org
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+// ----------------------------------------------------------------------------
+
+#include <string>
+
+#include "open3d/Open3D.h"
+
+int main(int argc, char *argv[]) {
+ using namespace open3d;
+
+ if (argc == 2) {
+ std::string option(argv[1]);
+ if (option == "--skip-for-unit-test") {
+ utility::LogInfo("Skiped for unit test.");
+ return 0;
+ }
+ }
+
+ auto sphere = geometry::TriangleMesh::CreateSphere(1.0);
+ sphere->ComputeVertexNormals();
+ sphere->PaintUniformColor({0.0, 1.0, 0.0});
+ visualization::DrawGeometries({sphere});
+ return 0;
+}

README.md

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-# open3d-cmake-find-package
+# Find Pre-Installed Open3D Package in CMake
+
+This is one of the two CMake examples showing how to use Open3D in your CMake
+project:
+
+* [Find Pre-Installed Open3D Package in CMake](https://github.com/intel-isl/open3d-cmake-find-package)
+* [Use Open3D as a CMake External Project](https://github.com/intel-isl/open3d-cmake-external-project)
+
+For more details, check out the [Open3D repo](https://github.com/intel-isl/Open3D) and
+[Open3D docs](http://www.open3d.org/docs/release/cpp_project.html).
+
+## Step 1: Compile and install Open3D
+
+Follow the [Open3D compilation guide](http://www.open3d.org/docs/release/compilation.html),
+compile and install Open3D in your preferred location. You can specify the
+installation path with `CMAKE_INSTALL_PREFIX`. E.g.
+
+On Ubuntu/MacOS:
+
+```bash
+git clone --recursive https://github.com/intel-isl/Open3D.git
+cd Open3D
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX=${HOME}/open3d_install ..
+cd ../..
+```
+
+On Windows:
+
+```batch
+git clone --recursive https://github.com/intel-isl/Open3D.git
+cd Open3D
+mkdir build
+cd build
+cmake -G "Visual Studio 16 2019 Win64" -A x64 -DCMAKE_INSTALL_PREFIX=C:\open3d_install ..
+cmake --build . --config Release --target install
+cd ..\..
+```
+
+## Step 2: Use Open3D in this example project
+
+On Ubuntu/MacOS:
+
+```bash
+git clone https://github.com/intel-isl/open3d-cmake-find-package.git
+cd open3d-cmake-find-package
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX=${HOME}/open3d_install ..
+./Draw
+```
+
+On Windows:
+
+```batch
+git clone https://github.com/intel-isl/open3d-cmake-find-package.git
+cd open3d-cmake-find-package
+mkdir build
+cmake -G "Visual Studio 16 2019 Win64" -A x64 -DCMAKE_PREFIX_PATH=C:\open3d_install ..
+cmake --build . --config Release
+Release\Draw
+```